File-sharpening apparatus.



No. 843,082. -PATENTED FEB. 5, 1907. J. M. GALE.

FILE SHARPENING APPARATUS. APPLICATION I'ILED NOV. 9. 1905.

H dmeafllale,

Witnesses Inventor.

Attorneys UNITED STATES PATENT OFFICE.

' JAMES M. GALE, OF NEW YORK, N. Y.

' FILE-'SHARPENING:APPARATUS.

Specification of Letters Patent.

PatentedjEeb. 5, 1 90*? Application filed November 9, 1905. Serial Nos 286,562.

To an whom it may concern.-

Be it known that I, JAMES M. GALE, a citizen of the United States, residing at New- This invention relates to blast apparatus,

and is particularly designed for use 1n resharpening files by directing a blast of sand or other suitable material against the file. is proposed to provide sim lified and at the same time efficient means or collecting and forcibly directing the sharpening compound against the files and to prevent wearing away 0 the casin of the apparatus under the action ofthe b last ap 'aratus.

Another object 0 the invention is to maintain the sharpening compound in a thoroughiy-mixed condition by the action of the blast device. i

It is furthermore designed to providefor conveniently directing the steam or other fluid under pressure against the file's, so as. toclean the latter of the compound which accu-.

mulates thereon.-

With these and other objects in view the present invention consists in the combination and arrangement of parts, as will be hereinafter more fully described, shown in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that changes in the form, proportion, size, and minor details may be made within the scope of the claims without de arting from the spirit or sacrificing any 0 the advantages of the invention. 4 I

In the drawings, Figure 1 is a longitudinal sectional view of the apparatus of the present invention. Fig. 2 is a cross-sectional view on the line '2 2 of Fig. 1. Fig. 3 is an enlarged detail sectional view taken through the blast-nozzle. Fig. 4 is a detail sectional view taken on the line 4 4 of Fig. 3.

Like characters of reference designate corresponding parts in all of the figures of the drawings.

The casing for the present ap aratus includes a substantially horizonta compartment. '1, which is supported upon suitable leg-standards 2, and an upwardly-inclined compartment 3 of considerable length,which has its elevated end held by a suitable support 4. The compartment 1 is divided by a ongitudinal upstandin partition 5 into two subcompartnients 6 an 7, of which the comcase adjacent the bottom thereof. supply-pipe a service-pipe 11 leads u wardly partment 6 is designed to contain the sharpening compound which is usually made u of. sand or the like and water. p

A11 overflowopening 8 is formed in the outer wall of the compartment 6, and an opening 9 is formed in the partition5 to ermit of the free circulation of theliquid om the compartment 7 to the compartment 6, whereby the flow of material through the opening 9 tendsto the maintain the same in a thoroughly-mixed condition.

It is proposed'to suck up the compoundfrom the compartment 6 and then direct the same forwardly in a gowerful jet through the compartments 1 an '3, and this is accom glished by means of a steam-supply pipe 10,

isposed transversely across the front of the From this andtermlnatesinanelbow12,directe toward the case and carries the j et-nozzle. This nozzle includes a pipe 13, threaded into the elbow and having an externally-threaded closed forward end, which is pierced by. a horizontal series of threaded openings 14, into which are threaded the series of'pipes-15, which have their forward discharge ends provided with laterally-elongated openings in the nature of oblong slots. A nuxing-chamber 16 embraces thetubes and is threaded upon the forward end of the part 13 with its forward end projecting beyond the series of tubes and internallythreaded for'the reception of a reducer-plug 17, having an elongated opening or slot 18 extendingin a horizontal direction, so as to produce a flat jet.

to which is connected a suction-pipe 20, terminating in an elbow 21, to which-another length of suction-pipe 22 is connected, said u (piercing the front of the compartment troduced through the 0 on upper vportion ofthe front of the case an held in front of the nozzle, after which steam or other fluid under pressure is admitted to the nozzle by opemng a suitable valvesuch, for instance, as shown at 25-upon the service-pi e 11. As the steam "escapes through the tu es 15 The mixing chamber 16'has' an intermediate branch 19,.

"a suction is produced in the chamber 16,

whereby the solution in the compartment 6 is taken up through the suction-pipe and then discharged with the steam through the outlet 18 of the nozzle, thus producing a broad and relatively thin jet of the solution, which is directedagainst the file with considerable force to cut and thereby sharpen metallic plate 26 is secured to the part 3 in position to be struck by the jet, said plate eing suitably secured to the part 3fo'r instance, by means of fastenings 27, the heads of which are hardened to withstand the wear of the blast; A swinging bafile-plate 28 is swung from the top of the compartment 3, as

indicated at 29, sald plate being of hardened- 7 the blast-upon the case.

metal and located in the path of the jetto break the force thereof. Another and longer baffle-plate 30' is swung from the top of the. rear portion of the compartmentS, so as to. break the return force of the blast, and thereby reduce to a great extent the wear of p A suitable stack or chimney 31 leads upwardly from the top of the compartment 3 to carry off the steam which accumulates Within the compartment. After the file has thus'been recut it is pro' posed to cleanse the same by means of a steam-blast, which is carried outPby means of a pipe 32, rising from the supply-pipe 10 and equip ed at its upper end with a nozzle 33, there eing a suita le valve 34 to control the passage of steam through the nozzle 33. The recut or resharpened file is held over the nozzle 33 and the valve 34 opened, whereby the blast of steam will remove the accumulations of the sharpening solution from the file, and thereby cleanse the latter in a very sim lo and efficient manner.

vi ithin the bottom portion of the compartment 7 there is a transverse partition 35, inclined downwardly andrearwardly from the front of the device to the bottom of the compartment just in front of the opening 9. Another transverse partition 36 inclines downwardly and forwardly across the top of the opening 9 and terminates short of the lower end of the partition 35. The purpose of the 1partition 35 is to prevent the accumulation 0 the liquidwithin the front of the compartment 7 and to compel theliquid pass through the opening 9 into the compartment 6.

Having thus described the invention, what is claimed is 1'. Afile-sharpening apparatus comprising a case having a sharpening-compound-containing receptacle at the front thereof and a downwardly and forwardly inclined chute portion leading to the receptacle, a blast apparatus in communication with the receptacle with its nozzle directed into the case toward the inclined chute, a normally vertical swingingbaffle within the case in the path v of the jet from the nozzle, and another normally vertical swinging baffle in rear of the first-mentioned baflie and in the return-path of the blast but out of the path of the direct blast.

2. A fileesharpening apparatus comprising a case including a frontcompartment for con taining a sharpening-point, and a rear upwardly-inclined compartment leading there from, a blast-device in communication with the ,front compartment and discharging therdthrough toward the rear compartment, a stack rising from the rear compartment, a normally vertical swinging baffle hung from the top of the rear compartment in front of the stack and in the path of the blast, and another normally vertical swinging baflie hungfrom' the top of, the rear compartment in rear of the stack out of the path of the direct blast and in the return-path of the blast.

3. In a file-sharpening apparatus, the combination of a case having a compartmentfor containing'a sharpening compound, a blast device in-communication with the compartment and including a nozzle made up of a pipe-section which-is closed at its forward end, a series'oftubes piercing-the closed end of the pipe and lying in the same plane, a mixi -chamberembracing the tube, and a reducer fitted in the discharge end of the mixing-chamber and provided with a discharge-slot alined with the discharge ends of the tubes.

4. A blast-nozzle, comprising a'pipe member closed at its forward end, aplurality of tubes piercing the closed end of. the pipev member and lying in the same plane, and a mixing-chamber embracing the tubes and carried by the pipe member, said mixingchamber extending in front of the tubes, a reducer fitted in the outer end of the mixingchamber and having a discharge-slot alined with the discharge ends of the tubes, and a suction branch for the mixing-chamber.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

JAMES M. GALE; Witnesses:

JOHN M. CArURRo. A. MURPHY. 

